Children as young as 10 are "riddled with scabies" according to doctors working in the camps.
The Sudanese man was arrested by British police close to the Folkestone terminal in Kent.
The European Commission will transfer almost 50 million euros to tackle the growing crisis
The U.K. government says it has "got a grip" on the crisis.
An automatic bot, programmed by two journalists, is correcting the term "illegal immigrants" on Twitter.
Thousands of migrants have attempted to enter the Channel tunnel this week.
Migrant groups say police action contributed to the young woman's death.
There are already thought to be 3,000 immigrants living in makeshift camps at Calais
Mayor of Calais demands British PM's assistance as chants of of "Heil Hitler" are heard in rally
Britain and France are on a collision course over how to stem a tide of desperate men and women determined to cross the Channel